Charles H. Spurgeon on Psalms 91:1

Shall abide. The Hebrew for "shall abide" is Nkwlty, which signifies, he shall pass the night. Abiding denotes a constant and continuous dwelling of the just in the assistance and protection of God. That help and protection of God is not like a lodge in a garden of cucumbers, or in a vineyard; which is destroyed in a moment, nor is it like a tent in the way which is abandoned by the traveller. It is a strong tower, a paternal home, wherein we spend all our life with the best, wealthiest, and mightiest of parents. Passing the night also denotes security and rest in time of darkness, temptations and calamities. With God Abraham passed the night, when He foretold to him the affliction of his descendants in Egypt, and their deliverance, Ge 15:12-16. Then also God said to him (Ge 15:1), Fear not Abram. I am thy shield. And leading him forth he showed him the glittering stars, and said, Tell the number of the stars, if thou bc able; so shall thy seed be. Le Blanc.