Charles H. Spurgeon on Psalms 71:16

I will go in the strength of the Lord. The phrase, to go in, or, with the strengths of God, does not teach us that he would go by means of them, by their help and assistance, as many have thought, first, because the word is used to signify the illustrious and mighty deeds of God; secondly, because it denotes the subject of praise; but to go with the strength of Jehovah, as the rendering ought to be... is to go as if girt with his former deeds of power —girt with them as if with the material of praise. Hermann Venema.