Please read the passage before reading the comments.
We can call this passage a vocation call. God is calling Abram to be the leader for God’s people. Abram, however, is childless and had no people to lead at this time. Abram was also 75 years old at that time. Would God really want Abram to start a family at that age and have his children grow into a great people?
Abram raised the question ands God had an answer for Abram. God had Abram sacrifice a heifer, goat, ram, a young pigeon. Abram found out that it took work to keep the covenant sacrifices from being defiled by birds of prey. The covenant took energy, Abram learned, to keep it. Becoming parent at 75 would also take energy, but Abram would be up for the task. God accepted the sacrifice at night fell, and God promised to give the whole land to Abram “from the wadi of Egypt to the great rive the Euphrates”.
God probably has asked us to do some weird things, things that seemed beyond our natural talents. When we assented to God’s call, we probably found strength and opportunities to find out that God was correct in tapping us for the tasks. I do not now where your Wadi od Egypt or Euphrates River is, but I hope you trust God enough to argue with God as you walk with God.