What This Chapter Is About
Moses raises further objections to his commission; God provides three signs and appoints Aaron as his spokesman. On the journey back to Egypt, the LORD confronts Moses at a lodging place, and Zipporah performs emergency circumcision. God declares Israel His firstborn son.
What Makes This Chapter Remarkable
Moses's phrase kevad-peh ukhevad lashon ('heavy of mouth and heavy of tongue') uses the same root kaved that will describe Pharaoh's hardened heart — the deliverer's weakness and the tyrant's stubbornness share a single Hebrew word, and both are overcome by God. The declaration 'Israel is My son, My firstborn' (beni vekhori Yisra'el, v22) is the most compressed statement of covenant identity in the Pentateuch, and it sets the theological logic for the tenth plague: firstborn for firstborn.
Translation Friction
We retained 'heavy of mouth and heavy of tongue' as a literal rendering rather than paraphrasing to 'slow of speech,' because the kaved wordplay with Pharaoh's heart is theologically load-bearing. The enigmatic phrase chatan damim ('bridegroom of blood,' v25-26) remains one of the most debated in the Torah. We rendered it literally and let the translator notes carry the interpretive weight, since no single English phrase can capture the intertwined meanings of marriage, blood, and covenant.
Connections
The staff-to-serpent sign in v3 echoes the nachash of Genesis 3:1 and anticipates the contest with Pharaoh's magicians in 7:10-12. 'All the men who sought your life are dead' (v19) echoes Genesis 31:3 and will be echoed in Matthew 2:20. The firstborn declaration (v22-23) sets up the Passover theology of chapters 11-12.
**Tradition comparisons:** JST footnote at Exodus 4:24: Subject who sought to kill Moses changed from the Lord to an angel or adversarial figure See the [JST notes](/jst/exodus).