: to pay attention to
(advice, a warning, etc.)
: to give consideration or attention to : to mind : to heed what he says : heed the call
Revelation 3:3 NKJV
Remember therefore how you have received and heard; hold fast and repent. Therefore if you will not watch, I will come upon you as a thief, and you will not know what hour I will come upon you.
Matthew 24:44 NKJV
Therefore you also be ready, for the Son of Man is coming at an hour you do not expect.
Matthew 25:13 NKJV
“Watch therefore, for you know neither the day nor the hour in which the Son of Man is coming.
Mark 13:32-33 NKJV
“But of that day and hour no one knows, not even the angels in heaven, nor the Son, but only the Father.  Take heed, watch and pray; for you do not know when the time is.
Luke 21:34-36 NKJV
“But take heed to yourselves, lest your hearts be weighed down with carousing, drunkenness, and cares of this life, and that Day come on you unexpectedly.  For it will come as a snare on all those who dwell on the face of the whole earth.  Watch therefore, and pray always that you may be counted worthy to escape all these things that will come to pass, and to stand before the Son of Man.”
1 Thessalonians 5:6-22 NKJV
Therefore let us not sleep, as others do, but let us watch and be sober.  For those who sleep, sleep at night, and those who get drunk are drunk at night.  But let us who are of the day be sober, putting on the breastplate of faith and love, and as a helmet the hope of salvation.  For God did not appoint us to wrath, but to obtain salvation through our Lord Jesus Christ,  who died for us, that whether we wake or sleep, we should live together with Him.  Therefore comfort each other and edify one another, just as you also are doing.  And we urge you, brethren, to recognize those who labor among you, and are over you in the Lord and admonish you,  and to esteem them very highly in love for their work’s sake. Be at peace among yourselves.  Now we exhort you, brethren, warn those who are unruly, comfort the fainthearted, uphold the weak, be patient with all.  See that no one renders evil for evil to anyone, but always pursue what is good both for yourselves and for all.  Rejoice always,  pray without ceasing,  in everything give thanks; for this is the will of God in Christ Jesus for you.  Do not quench the Spirit.  Do not despise prophecies.  Test all things; hold fast what is good.  Abstain from every form of evil.