NET

12 When the prince provides a freewill offering, a burnt offering, or peace offerings as a voluntary offering to the Lord, the gate facing east will be opened for him, and he will provide his burnt offering and his peace offerings just as he did on the Sabbath. Then he will go out, and the gate will be closed after he goes out.

Darby

12 And when the prince shall offer a voluntary burnt-offering or voluntary peace-offerings unto Jehovah, the gate that looketh toward the east shall be opened for him and he shall offer his burnt-offering and his peace-offerings as he did on the sabbath-day, and he shall go out again, and the gate shall be shut after he hath gone out.

KJV

12 Now when the prince shall prepare a voluntary burnt offering or peace offerings voluntarily unto the LORD, [one] shall then open him the gate that looketh toward the east, and he shall prepare his burnt offering and his peace offerings, as he did on the sabbath day: then he shall go forth; and after his going forth [one] shall shut the gate.