I, AB, solemnly swear (or declare) that I will support and defend the Constitution of the United States and oppose all domestic and foreign enemies; I will bear true faith and loyalty; I voluntarily undertake this obligation, without any psychological reservation or escape purpose; I will faithfully perform my upcoming duties. God bless me.

Translation:

I, (name of the sworn person), solemnly swear (or declare): I will support and defend the Constitution of the United States and oppose all enemies at home and abroad; I will stick to the correct faith and loyalty; I voluntarily fulfill this obligation; Never flinch or deliberately avoid; I will be loyal to the coming Marine Corps. God bless.