18 On that day the Lord made a covenant with Abram and said, "To your descendants I give this land, from the Wadi of Egypt to the great river, the Euphrates-
31 "I will establish your borders from the Red Sea to the Mediterranean Sea, and from the desert to the Euphrates River. I will give into your hands the people who live in the land, and you will drive them out before you.
(Read Exodus 23:20-33)
It is here promised that they should be guided and kept in their way through the wilderness to the land of promise, Behold, I send an angel before thee, mine angel. The precept joined with this promise is, that they be obedient to this angel whom God would send before them. Christ is the Angel of Jehovah; this is plainly taught by St. Paul, 1 Corinthians 10:9. They should have a comfortable settlement in the land of Canaan. How reasonable are the conditions of this promise; that they should serve the only true God; not the gods of the nations, which are no gods at all. How rich are the particulars of this promise! The comfort of their food, the continuance of their health, the increase of their wealth, the prolonging their lives to old age. Thus hath godliness the promise of the life that now is. It is promised that they should subdue their enemies. Hosts of hornets made way for the hosts of Israel; such mean creatures can God use for chastising his people's enemies. In real kindness to the church, its enemies are subdued by little and little; thus we are kept on our guard, and in continual dependence on God. Corruptions are driven out of the hearts of God's people, not all at once, but by little and little. The precept with this promise is, that they should not make friendship with idolaters. Those that would keep from bad courses, must keep from bad company. It is dangerous to live in a bad neighbourhood; others' sins will be our snares. Our greatest danger is from those who would make us sin against God.
Matthew Henry's Commentary on Genesis 15:18
Commentary on Genesis 15:17-21
(Read Genesis 15:17-21)
The smoking furnace and the burning lamp, probably represented the Israelites' severe trials and joyful deliverance, with their gracious supports in the mean time. It is probable that this furnace and lamp, which passed between the pieces, burned and consumed them, and so completed the sacrifice, and testified God's acceptance of it. So it intimates that God's covenants with man are made by sacrifice, Psalm 50:5. And we may know that he accepts our sacrifices, if he kindles in our souls pious and devout affections. The bounds of the land granted are stated. Several nations, or tribes, are spoken of, that must be cast out to make room for the seed of Abram. In this chapter we perceive in Abram faith struggling against, and triumphing over, unbelief. Wonder not, believers, if you meet with seasons of darkness and distress. But it is not the will of God that you should be cast down: fear not; for all that he was to Abram he will be to you.