There are three evidences that someone is a Christian. They are love for others, unity with Christians and holiness to God.
God is love and we love because He first loved us. To the degree that you can love others depends on the degree that you have experienced His love. He loves you intimately and unconditionally. His love is not based on how successful you are, how much you do for Him, how good you are, how bad you are or anything else about you. His love is all about Him. He loves everyone because He is love. The love of Christ for you cost Him His very life.
John 3:16 For God so loved the world, that He gave His only begotten Son, that whoever believes in Him shall not perish, but have eternal life.
The Lord came so that He might have a relationship with you. He wants you to belong to Him, which means, He wants you to “be longing” for Him. He longs to be gracious to you and to show His love to you and for you.
Isaiah 30:18 Therefore the Lord longs to be gracious to you, And therefore He waits on high to have compassion on you. For the Lord is a God of justice; How blessed are all those who long for Him.
When Jesus came He gave a new commandment to His disciples and that is to love one another as He loved us.
John 13:34 A new commandment I give to you, that you love one another, even as I have loved you, that you also love one another.
How did He love us? By laying down His life for us.
John 15:13 Greater love has no one than this, that one lay down his life for his friends.
He calls to you through creation. He seeks you through His Spirit and He died for you and expressed His love for you through His Son, Jesus Christ. When you come to know Him then you come to know His love.
I John 4:8 The one who does not love does not know God, for God is love.
True love for God requires the heart and soul. All of it. The soul is made up of the mind, will and emotions. The heart is your innermost being.
Deuteronomy 10:12 …what does the Lord your God require from you, but to fear the Lord your God, to walk in all His ways and love Him, and to serve the Lord your God with all your heart and with all your soul,
By your love for others will people know if you are a Christian, for a Christian is one who has been born again as His child and has come into a personal knowledge of Him.
I John 4:7 Beloved, let us love one another, for love is from God; and everyone who loves is born of God and knows God.
If nothing can separate us from His love then why are we so fearful to love others? Why are we afraid to go out of our comfort zone?
Romans 8:37-39 But in all these things we overwhelmingly conquer through Him who loved us. For I am convinced that neither death, nor life, nor angels, nor principalities, nor things present, nor things to come, nor powers, nor height, nor depth, nor any other created thing, will be able to separate us from the love of God, which is in Christ Jesus our Lord.
Has the Lord prompted you to do something for someone else? Don’t wait. It is the Lord who wants to bless you and bless that person. If you close your heart to that person in need then you are closing your heart to Christ. Even though the Lord loves you, you may not see His love for you as long as your heart is closed.
I John 3:17 But whoever has the world’s goods, and sees his brother in need and closes his heart against him, how does the love of God abide in him?
He was rich but became poor that we might become rich. He did this that we might not indulge ourselves in His blessings or to hold on to the blessings but rather that we might become poor that others might know the riches of Christ.
II Corinthians 8:9 For you know the grace of our Lord Jesus Christ, that though He was rich, yet for your sake He became poor, so that you through His poverty might become rich.
If He cares for the birds of the air and the flowers of the field, then how much more does He care for you. Do not have little faith? Live with abandonment to self and fully to Christ. He Himself said that He would never leave you or forsake you.
Matthew 6:26 Look at the birds of the air, that they do not sow, nor reap nor gather into barns, and yet your heavenly Father feeds them. Are you not worth much more than they?
Matthew 6:30 But if God so clothes the grass of the field, which is alive today and tomorrow is thrown into the furnace, will He not much more clothe you? You of little faith!