No guarantee of salvation - No believer's security

There is no guarantee of salvation.  JESUS PROMISES us eternal life, if we follow Him and if we endure with Him until the end.  If we REPENT and are BAPTIZED, we OBEY JESUS, He gives us the HOLY SPIRIT, the SEAL that He places on us, that we belong to Him. But if we turn away from Him, and we do not obey Him, then we will not have eternal life. We need to stay with Him and endure until the very end. If we find ourselves outside the door of His house, when that door closes, then we are REPROBATES, we are CASTAWAYS, then we have strayed.
We need to stay with Jesus, endure with Him until the very, very end.  Most believers will end up in hell because most of them NEVER started following Jesus.  Most believe that they are saved and secure, there is no such thing.  JESUS SAVES US FROM SIN and He makes us free from sin, He puts His seal on us, we become a child of God but we must be OBEDIENT children.  Disobedient children  become cast aways.  We must run this race with endurance until the very, very end and we must stick to the rules or else, we disqualify ourselves.  There is NO GUARANTEE OF SALVATION.  Jesus said: The Door is NARROW and FEW there be that find it.  We must strive very hard and follow Him every day.  Many will try and not be able. There is NO GUARANTEE OF SALVATION.
May Jesus bless you.