Glancing this way and that and seeing no one, he killed the Egyptian and hid him in the sand.
The next day he went out and saw two Hebrews fighting. He asked the one in the wrong, "Why are you hitting your fellow Hebrew?"1
References for Exodus 2:13
The man said, "Who made you ruler and judge over us?2 Are you thinking of killing me as you killed the Egyptian?" Then Moses was afraid and thought, "What I did must have become known."
References for Exodus 2:14