Numbers 16:28 New English Translation

²⁸Then Moses said, “This is how^[a] you will know that the Lord has sent me to do all these works, for I have not done them of my own will.^[b]

Numbers 16:28 tn Heb “in this.”
Numbers 16:28 tn The Hebrew text simply has כִּי־לֹא מִלִּבִּי (ki loʾ millibbi, “for not from my heart”). The heart is the center of the will, the place decisions are made (see H. W. Wolff, Anthropology of the Old Testament). Moses is saying that the things he has done have not come “from the will of man” so to speak—and certainly not from some secret desire on his part to seize power.

New English Translation (NET)