The Book of Mormon portion:
1 Nephi 10:20-22
(#20) Question How are “seeking to do evil“ and “procrastinating repentance“ effectively the same thing?
20 Therefore remember, O man, for all thy doings thou shalt be brought into judgment. 21 Wherefore, if ye have sought to do wickedly in the days of your probation, then ye are found unclean before the judgment-seat of God; and no unclean thing can dwell with God; wherefore, ye must be cast off forever. 22 And the Holy Ghost giveth authority that I should speak these things, and deny them not. 1 Nephi 10:20-22
Satan tempts [us] with procrastination throughout our days of probation. Any choice to delay repentance gives him the chance to steal happiness from one of the spirit children of our Heavenly Father. We have all been tempted with that delay. We know from our own experience that President Spencer W. Kimball was right when he wrote, “One of the most serious human defects in all ages is procrastination,” and then he defined it: “an unwillingness to accept personal responsibility now”. And so Satan works on both our desire to think we have no cause to repent and our desire to push anything unpleasant into the future. He has tempted you and me, and those we love, with thoughts like this: “God is so loving; surely He won’t hold me personally responsible for mistakes which are simply the result of being human.” And then, if that fails, there is the thought that will almost surely come: “Well, I may be responsible to repent, but this is not a good time to start. If I wait, later will be better.” President Eyring