I think, if we are a Christian, this is a question that is always with is. It is part of us. I think at our conversion we were given the inner desire to be close to God and to fellowship with Him; but of course, because of our flesh it’s difficult.
In Exodus 24:2 we are told that only Moses could come near the Lord; all the rest of the people had to keep their distance. This is the way it was in the Old Testament. Only a select few like Moses could come near to God or they would be struck dead. And whenever they wanted to contact Him it would be through a priest and by bringing sacrifices.
What a privilege we have today—anybody—to be able to come near to God at any time. In fact, He invites us to come to Him and take our rest (Matt. 11:28). In Revelation 3:20 we have a picture of Jesus knocking on our hearts door asking us for fellowship. He says: “Behold, I stand at the door and knock. If anyone hears My voice and opens the door, I will come in to him and dine with him, and he with Me.”
Yes, it is much different now then it was in the Old Testament. What made the difference? How are we able to come near Him now? The answer of course is Jesus. He has made all the difference. He died for us to save us from our sins, and through Him we can come close to God.
There is no reason for anyone not to be able to come near to God. Everyone can come near Him. Jesus died for us to save us from our sins so that we can come near God. All you have to do is admit your sin and believe in Jesus–that is, believe that He died on the cross to save you and that His blood was shed for you, and trust Him to help you live for Him. If you do that, God gives you the right to become a child of God.
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.
But as many as received Him, to them He gave the right to become children of God, to those who believe in His name.
If you have believed in God and recieved Jesus into your life what you need to do is continue on in that belief and live a life that is holy and pleasing to God.
1 John 5:13
These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life, and that you may continue to believe in the name of the Son of God. NKJV
Pursue peace with all people, and holiness, without which no one will see the Lord. NKJV
8 Blessed are the pure in heart,
for they will see God. NIV