Both verses record God calling Moses up the mountain; 19:3 is the initial call, 19:20 a second summon.

Exodus 19:11 predicted God's descent; 19:20 fulfills that promise in the same narrative.

Exodus 19:24 immediately follows: God tells Moses to go down and come up again with Aaron, continuing the scene.

Exodus 24:18 continues the narrative: Moses later goes up again and stays 40 days on the same mountain.

Exodus 34:2 repeats the command to come up to the top of Mount Sinai, echoing the same location and action.

Exodus 34:4 shows Moses obeying that command, ascending Sinai with the new tablets - a direct parallel to his earlier ascent.

Exodus 24:12 repeats the pattern: God calls Moses to ascend Sinai, this time to receive the tablets.

Exodus 24:13 shows Moses obeying a similar call, now accompanied by Joshua, echoing the earlier ascent.

Deuteronomy 9:9 recounts the same ascent, recalling Moses' 40-day stay on Sinai without food or drink.

Nehemiah 9:13 recounts God descending on Sinai and speaking from heaven, directly referencing this event.

1 Kings 19:11 places Elijah on the same mountain (Horeb) for a theophany, echoing Moses' encounter - a typological parallel.