Mark 10:38

Or be baptised with the baptism wherewith I am baptized. Christ calls His Passion a baptism, because He was to be evidently immersed and drowned in it, according to what David says of himself, but much more of Christ (Psa 69:12), "Save me, 0 God; for the waters are come in unto my soul. I sink in deep mire, where there is no standing: I am come into deep waters, where the floods overflow me."