Matthew 7:21-23 (NLT)

21 “Not everyone who calls out to me, ‘Lord! Lord!’ will enter the Kingdom of Heaven. Only those who actually do the will of my Father in heaven will enter.

22 On judgment day many will say to me, ‘Lord! Lord! We prophesied in your name and cast out demons in your name and performed many miracles in your name.’

23 But I will reply, ‘I never knew you. Get away from me, you who break God’s laws.’

• Words are not a substitute for obedience to God’s Word., and neither are religious works. Preaching, casting out demons, and performing miracles can be divinely inspired, but they give no assurance of true salvation.

Luke 10:17-20 (NLT)

17 When the seventy-two disciples returned, they joyfully reported to him, “Lord, even the demons obey us when we use your name!”

18 “Yes,” he told them, “I saw Satan fall from heaven like lightning!

19 Look, I have given you authority over all the power of the enemy, and you can walk among snakes and scorpions and crush them. Nothing will injure you.

20 But don’t rejoice because evil spirits obey you; rejoice because your names are registered in heaven.”

How to have true salvation according to the Word:

Acts: 2:38 38 Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit.

Acts 26:20 (KJV)
20 But showed first unto them of Damascus, and at Jerusalem, and throughout all the coasts of Judaea, and then to the Gentiles, that they should repent and turn to God, and do works meet for repentance.

Romans 10:9-10 states:
“That if you confess with your mouth, ‘Jesus is Lord,’ and believe in your heart that God raised him from the dead, you will be saved.”

“For with the heart one believes and is justified, and with the mouth one confesses and is saved.”

1 Corinthians 15:3-4 (NASB)
3 For I delivered to you as of first importance what I also received, that Christ died for our sins according to the Scriptures,

4 and that He was buried, and that He was raised on the third day according to the Scriptures,