Acts 20:31

watch . Compare 1 Peter 5:8 .

and remember = remembering. Greek. mnemoneuo. Always translated "remember", save Hebrews 11:15 , Hebrews 11:22 .

by the space of three years . Greek. trietia. Only here.

warn . Greek. noutheteo. Used only by Paul, here and seven times in his epistles.