Matthew 27:43

He trusted in God
That is, he pretended to claim an interest in him, to be high in his favour and esteem, and to have great faith and confidence in him:

let him deliver him now;
directly, from the cross, and the death of it:

if he will have him;
or if he is well pleased with him as his own Son, or delights in him as such, and will show him any favour and good will; see ( Psalms 22:8 ) , where are these very words, and which are predicted should be said by these men to Christ; and are a wonderful confirmation of the truth of that Psalm and prophecy belonging to him:

for he said, I am the Son of God;
not only in his ministry, but he had said so in their grand council, before them all.