Isaiah 55

As Isaiah invites all to come unto Christ, he instructs -

"Seek ye the LORD while he may be found, call ye upon him while he is near:
7 Let the wicked forsake his way, and the unrighteous man his thoughts: and let him return unto the LORD, and he will have mercy upon him; and to our God, for he will abundantly pardon."  (Old Testament | Isaiah 55:6 - 7)

"While he is near" reminds me of the words of Amulek -

"...I beseech of you that ye do not procrastinate the day of your repentance until the end; for after this day of life, which is given us to prepare for eternity, behold, if we do not improve our time while in this life, then cometh the night of darkness wherein there can be no labor performed."  (Book of Mormon | Alma 34:33)

For the Lord suggests His eternal perspective and how He deals with man, saying -

"For my thoughts are not your thoughts, neither are your ways my ways, saith the LORD.
9 For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts."  (Old Testament | Isaiah 55:8 - 9)