Jesus lays down his life voluntarily and has authority to take it up again.

John 10:17–18

¹⁷Therefore doth my Father love me, because I lay down my life, that I might take it again.

¹⁸No man taketh it from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again. This commandment have I received of my Father.