Exodus 19:12 establishes the boundary command that God here reinforces — preventing the people from approaching the mount on pain of death.

Exodus 19:13 specifies the death penalty for touching the mount — stoning or shooting — and notes the trumpet signal, expanding on the warning here.

Exodus 19:24 repeats the warning and adds that only Moses and Aaron may approach — reinforcing the command here.

Exodus 3:5 similarly commands Moses not to approach holy ground — reinforcing the principle of distance and reverence before God.

Exodus 33:20 states that no one can see God's face and live — the same reason the people here are warned not to gaze on the Lord.

Exodus 24:11 shows the elders seeing God and surviving, contrasting the warning against gazing in Exodus 19:21. Different outcome under covenant.

Exodus 34:3 repeats the same prohibition: no one may come up the mountain, echoing the warning against breaking through.

1 Samuel 6:19 shows the deadly consequence of looking into the ark — illustrating the same danger of irreverent gazing warned about here.

Hebrews 12:28 calls for reverence and godly fear in worship, directly applying the lesson of Sinai's holy terror.

Hebrews 12:29 declares God is a consuming fire — the reason for the deadly danger of approaching Him irreverently.

Numbers 4:20 directly parallels the warning: 'they shall not go in to look on the holy things... lest they die' — same 'gazing' danger.

Numbers 4:18 warns the Kohathites not to be destroyed by improper handling of holy things, similar to the danger of gazing at God.

Ecclesiastes 5:1 counsels cautious reverence when approaching God — echoing the need for holy awe behind the warning here.