Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is. And every man that hath this hope in him purifieth himself, even as he is pure. (1 John 3:2-3 KJV)
My ultimate goal should be to be like Jesus. When He comes for us we will be changed and will be like Him. With this goal and hope in mind, shouldn't we seek to purify ourselves and be holy while we live on this earth? I'm not talking about sinless perfection. That is impossible until Jesus comes. I'm talking about living a life of repentance and a conscience toward God so that we do not need to be ashamed at His coming.
Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed, In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. (1 Corinthians 15:51-52 KJV)