And Jesus cried out again with a loud voice, and yielded up His spirit.

Matthew 27:50:

We do not know why Matthew did not give more of the sayings of Christ on the Cross (one out of seven). And even in this verse it says that Jesus cried out with a loud voice, but does not tell that He said "Father into Thy Hands, I commend my spirit.."

I do not have the answer on that other than to say that Matthew's purpose was to express the fulfillment of Old Testament Scripture.

The theological significance of this verse is that it stresses the voluntary nature of Christ. He yielded up His spirit, He was not executed. He voluntarily let go of his life. The first day of school in Los Angeles I was summoned to a rehab near Kaiser Hospital. Cathryn Strand had died, and her oldest son (age 78) said that she had told him the night before that she was "letting go." In other words, she was giving up the fight to stay alive after breaking her leg.

While there is something to that, the parallels fall short with Christ on the Cross. Christ was in complete control, even when on the Cross. Matthew is making it clear that Christ has the power to lay down His life, and then to take it up again (John 10:18). No one had the power to take away the life of the sinless Son of God. Only God could dismiss His Spirit from the body that had been His tabernacle on this earth (John 1:14).