Psalms 40:17

But I [am] poor and needy
As Christ was literally, ( 2 Corinthians 8:9 ) ; and in a spiritual sense, when deserted by his Father, forsaken by his disciples, and surrounded by his enemies; and had the sins of his people, the curse of the law, and the wrath of God upon him;

[yet] the Lord thinketh upon me;
thinketh good for me, as the Targum; or thinks highly of me; has me in great esteem though despised of men, and in such a suffering state;

thou [art] my help and my deliverer;
he believed he should have what he prayed for, ( Psalms 40:13 ) ; see ( Isaiah 50:7-9 ) ;

make no tarrying, O my God;
which is a repetition of the request in ( Psalms 40:13 ) .