Hi mguldner,
Thanks from me also, for, 'My question is, is it scriptural to say I killed Jesus?'
I would give a resounding no! to it, partly for the reasons already given, but also because I know someone who heard the gospel preached like this, who was already confused about who God is, and for whom it was one accusation too far, to add to all the others racing round in his mind because of his sins.
The statement 'I killed Jesus' simply is not true, and therefore, it forms a shakey basis for personal faith in Him (at best), and a platform ripe for evil spirits to focus a person's mind on themselves and their worthlessness, even taking upon themselves unbearable guilt, for what is, in biblical terms, a lie.
I've heard a lot of evangelism based on 'you should believe in Jesus because He died for you', which is all true but not the whole story. It can easily be turned into, 'I believe in Jesus, because He died for me' - which is also true, but not the whole story. The next stage is, 'You should believe in Jesus, because He died for me', which I have recently heard someone say to an audience.
In contrast, the Bible says 'And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up: that whosoever believes in him should not perish, but have eternal life. For God so loved the world, that He gave His only begotten Son that whosoever believes in Him should not perish, but have everlasting life. God sent not His Son into the world to condemn the world, but that the world through Him might be saved.'
In this statement, we see that the death of the serpent accomplished by the Deliverer, precedes the explanation of God's reasoning for His mission on our behalf. I, personally, think this is a vital part of the gospel. It is the rock on which Paul can confidently say 'our old man was crucified with Christ', and extrapolate its impact upon him (and every believer, personally), as 'I am crucified with Christ', and, 'they that are Christ's have crucified the flesh with the affections and lusts.'
This is the attractive side of the gospel to those who have first understood that they are fatally flawed by sin, in God's sight, and that only He could provide a remedy.
Many (even Christians) don't really 'get' the basic truth that they are dead in trespasses and sins by God's reckoning, and that to be reckoned dead by Christ's death, is an utter spiritual miracle which frees them from condemnation and judgement for ever, if they will make a break with sin through a heart of genuine repentance.
I hope you see what I'm getting at, in that I see those three words on your T shirt as a misrepresentation of God's declared attitudes and intentions towards mankind.
Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people. (Luke 2:10)