Amen! So let it be!
Mark hit the nail on the head!
Here is just some added material for your benefit, dear child of God.
First of all, for your true salvation, as Mark said, you have to accept Jesus as your Savior...
Romans 3:27 Can we boast, then, that we have done anything to be accepted by God? No, because our acquittal is not based on our good deeds. It is based on our faith. (new living)
Romans 10:13 Anyone who calls on the name Lord Jesus will be saved. (new living)
John 3:16 God so loved the world that He gave His only Son, so that everyone who believes in Him will not perish, but have eternal life. (new living)
John 3:16 For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. (NKJV)
John 3:16 For God so loved the world that He gave His one and only Son, that whoever believes in Him shall not perish, but have eternal life. (NIV)
John 5:24 I assure you, those who listen to my message and believe in God who sent me have eternal life. (new living)
One way you share your faith, dear sister, is by accepting others as Christ has accepted you:
Romans 15:7 Accept each other just as Christ has accepted you; then God will be glorified. (new living)
And for that verse Matthew 7:21, Linda, I looked it up in the Life Application Study Bible, by Tyndale; new living translation...Here is what they had to say about Matthew 7:21...
Some self-professed athletes can "talk" a great game, but that tells you nothing about their athletic skills. And not everyone who talks about Heaven belongs to God's Kingdom. Jesus is more concerned about your walk than our talk. He wants us to do right , not just say the right words. Your house (which represents your life, 7:24) will withstand the storms of life only if you do what is right instead of just talking about it. What you do can not be separated from what you believe.
I also looked up Matthew 7:21 in the Nelson Study Bible. (Nelson's Complete study System, by Nelson; NKJV Translation).
Here is what they had to say about Matthew 7:21-23:
Because so many people teach the wrong way, there is a tendency to ask how so many people could be wrong. Such doubts are especially strong when false teachers prophesy, cast out demons, and perform wonders in Jesus' name. However, it is important to remember that the Word of God is superior to any miracle.
I wrote those quotes exactly the way they had them written in their Bible; italicized words, the quotations, etc.
I hope this has answered your question. God's Word is forever.