Latin Vulgate
3:3 in mente ergo habe qualiter acceperis et audieris et serva et paenitentiam age si ergo non vigilaveris veniam tamquam fur et nescies qua hora veniam ad te

King James Version
3:3 Remember therefore how thou hast received and heard, and hold fast, and repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt not know what hour I will come upon thee.

American Standard Version
3:3 Remember therefore how thou hast received and didst hear; and keep it, and repent. If therefore thou shalt not watch, I will come as a thief, and thou shalt not know what hour I will come upon thee.

Bible in Basic English
3:3 Keep in mind, then, the teaching which was given to you, and be ruled by it and have a change of heart. If then you do not keep watch, I will come like a thief, and you will have no knowledge of the hour when I will come on you.

Darby's English Translation
3:3 Remember therefore how thou hast received and heard, and keep it and repent. If therefore thou shalt not watch, I will come upon thee as a thief, and thou shalt not know at what hour I shall come upon thee.

Douay Rheims
3:3 Have in mind therefore in what manner thou hast received and heard: and observe, and do penance. If then thou shalt not watch, I will come to thee as a thief, and thou shalt not know at what hour I will come to thee.

Noah Webster Bible
3:3 Remember therefore how thou hast received and heard, and hold fast, and repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt not know what hour I will come upon thee.

Weymouth New Testament
3:3 Be mindful, therefore, of the lessons you have received and heard. Continually lay them to heart, and repent. If, however, you fail to rouse yourself and keep awake, I shall come upon you suddenly like a thief, and you will certainly not know the hour at which I shall come to judge you.

World English Bible
3:3 Remember therefore how you have received and heard. Keep it, and repent. If therefore you won`t watch, I will come as a thief, and you won`t know what hour I will come on you.

Young's Literal Translation
3:3 `Remember, then, how thou hast received, and heard, and be keeping, and reform: if, then, thou mayest not watch, I will come upon thee as a thief, and thou mayest not know what hour I will come upon thee.