Thou wilt keep him in perfect peace Hebrew, in peace, peace; peace with God, and peace of conscience; peace at all times, and under all events; whose mind is stayed on thee Hebrew, יצר סמוךְ, the thought, or, mind fixed, or, the stayed mind, as Bishop Lowth renders it; that is, the man whose thoughts and mind are fixed and settled on thee by faith, as the next clause explains it. In the foregoing verse, the righteous are represented as being admitted into the city, and here as being preserved and defended in it by God's almighty power. Trust ye in the Lord Ye, who truly turn to and obey him; for ever In all times and conditions, and as long as you live; for in the Lord Jehovah
In him who was, and is, and is to come; is everlasting strength Hebrew, צור עולמים, the rock of ages; which will assuredly support those who build their confidence thereon. That is, he is a sure refuge to all those that trust in him through all generations.