John Gill Commentary Psalms 70

[Make haste], O God, to deliver me
The phrase, "make haste", is supplied from the following clause in (Psalms 40:13) ; it is, "be pleased, O Lord", or "Jehovah". The Targum renders it, "to deliver us"; very wrongly;

make haste to help me, O Lord; (See Gill on Psalms 22:19).

Let them be ashamed and confounded In (Psalms 40:14) it is added, "together"; (See Gill on Psalms 40:14);

that seek after my soul ; or "life"; in (Psalms 40:14) it is added, "to destroy it"; for that was the end of their seeking after it;

let them be turned backward (See Gill on Psalms 40:14).

Let them be turned back for a reward of their shame
In (Psalms 40:15) it is, "let them be desolate"; which seems to respect their land and houses, here their persons; (See Gill on Psalms 40:15);

that say ;
in (Psalms 40:15) it is added, "to me"; not to his people, but himself,

aha, aha :
rejoicing at his calamity and distress. The Targum is,

Let all those that seek thee
The Targum is, ``that seek doctrine (or instruction) from thee.'' rejoice and be glad in thee ;
the Targum paraphrases it, ``rejoice and be glad in thy word.'' and let such as love thy salvation say continually, let God be
magnified ;
the Targum is, ``let the glory of the Lord be increased;'' and in (Psalms 40:16) , instead of "God", it is "the Lord", or "Jehovah": (See Gill on Psalms 40:16).

But I [am] poor and needy
In (Psalms 40:17) it follows, yet "the Lord thinketh on me"; instead of which it is here, (See Gill on Psalms 40:17);

make haste unto me, O God ;
which repeats for sense the same petition as in (Psalms 71:1) ;

you [are] my help and my deliverer; O Lord, make no tarrying ;
in (Psalms 40:17) it is, "O my God".