If you can share Christ in him, wonderful. If you share about Christ and His history start in the Gospels. If you want Christ up front and personal to ones life in Christ, start in the letters of Paul.
May I show you the difference? This is Mathew, Mark and Luke and John.
Matthew 1:1 The book of the generation of Jesus Christ, the son of David, the son of Abraham.
Mark 1:1-2 The beginning of the gospel of Jesus Christ, the Son of God; As it is written in the prophets, Behold, I send my messenger before thy face, which shall prepare thy way before thee.
Luke 1:1-4 Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us, Even as they delivered them unto us, which from the beginning were eyewitnesses, and ministers of the word; It seemed good to me also, having had perfect understanding of all things from the very first, to write unto thee in order, most excellent Theophilus, That thou mightest know the certainty of those things, wherein thou hast been instructed.
John 1:1-4 In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made. In him was life; and the life was the light of men.
Now the First letter Paul wrote to the Thessalonians:
1 Thessalonians 1:1 Paul, and Silvanus, and Timotheus, unto the church of the Thessalonians which is in God the Father and in the Lord Jesus Christ: Grace be unto you, and peace, from God our Father, and the Lord Jesus Christ.
Do you see the difference, the Gospels according to Mathew, Mark, and Luke are direct to Israel, John Changes somewhat and puts the emphasis on Jesus Christ the Word. Paul even in his first statement in the Word of God, is already speaking of Grace, our position in Christ, Peace with God, making God our Father as Jesus Christ said to pray "This Way" Our Father.
Paul is the one that will give the information of Christ in you the Hope of Glory. Which is one of my favorite scriptures. Colossians 1:27 To whom God would make known what is the riches of the glory of this mystery among the Gentiles; which is Christ in you, the hope of glory:
Then the other scripture that makes us new creatures in Christ Jesus. Galatians 2:20 I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.
There is a big gulf between who Christ was in the Gospels and Who He is in the believer. This was the Great Revelation Paul received that no other person had at the time it was revealed to him direct by Jesus Christ Himself. Gal 1:16 To reveal his Son in me, that I might preach him among the heathen; immediately I conferred not with flesh and blood:
Galatians 1:11-12 But I certify you, brethren, that the gospel which was preached of me is not after man. For I neither received it of man, neither was I taught it, but by the revelation of Jesus Christ.
This Gospel Paul speaks of is called by him, "his Gospel", he says it three times. That means that it is a different gospel and the only one that man will be judged by, for the Born Again Christian.
Rom 2:16 In the day when God shall judge the secrets of men by Jesus Christ according to my gospel.
Rom 16:25 Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began,
2Ti 2:8 Remember that Jesus Christ of the seed of David was raised from the dead according to my gospel:
This is a life long relationship with the Christ that is in us. The simple start of it all is:
John 3:15-17 That whosoever believeth in him should not perish, but have eternal life. For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
John new more about Paul's Gospel than all the others except Peter who was working hard to understand the things of Paul. Peter Got the big picture of Christ in him when Peter said, "1Pe 1:23 Being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever."
2 Peter 3:15-16 And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you; As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.
Start with Paul's first letters and go from there.
In Christ: Phillip