what exactly is a Christian and at what point does it start? Is it once we start following Christ instructions and lifestyle as best as possible with hope in Him, some say the baptism is mandatory....with of course His grace.
You asked, "What exactly is a Christian?" You know the majority of people in North America consider themselves Christians. Even most criminals in the U.S. prison system label themselves as "Christians." How far back can we trace the term "Christian"? It was first used in the First Century A.D., roughly five years after Pentecost. "And the disciples were called Christians first at Antioch." In the "church at Antioch," these individuals were also referred to as "disciples." Acts 11:26; 13:1, "Church" means "called out ones," while "disciple" refers to a "learner or pupil" and/or an "adherent and follower of a teacher." Thus, "Christians" are defined as those "called out" from the world to follow and learn from Jesus Christ. Can 200 million people in North America genuinely be true Christians? Jesus stated, "I have chosen you out of the world, therefore the world hateth you" (John 15:19). He described his followers as a "little flock" (Luke 12:32). Jesus set very strict conditions for being a disciple.
Jesus' followers would understand and follow the truth. John 8:31,32 states, "If you continue in my word, then you are truly my disciples. And you will know the truth, and the truth will set you free." Jesus' followers would persist in his teachings, meaning they would study the Bible every day. They would gain a deep understanding of his truth that would captivate them so much that they would give up everything they possess (Luke 14:33) in terms of materialism and possessions to follow him. In Mark 8:35, Jesus said, "Whoever wants to save his life will lose it; but whoever loses his life for my sake and for the gospel will save it." This implies dedicating everything to the Lord and using it in his service as he guides us. More strict requirements for being a disciple are found in Luke 14:26: unless a person "hates" (loves less) his father, mother, wife, children, brothers, and even his own life, "he cannot be my disciple." Again in Luke 9:23: "If anyone wants to follow me, let him deny himself, take up his cross daily, and follow me."
Jesus' requirements for being a Christian are quite strict. It's not surprising that he foresaw that only a "little flock" would meet the criteria. Indeed, many will identify as Christians, just as Jesus mentioned in Matthew 7:22,23: "Many will say to me in that day, Lord, Lord, have we not prophesied in thy name and in thy name... done many wonderful works? And then I will profess unto them, I never knew you..." (as Christians). The demands of discipleship are indeed high. A true Christian does not primarily seek financial or health rewards. However, the spiritual rewards are immensely greater in this life and lead to eternal life (Mark 10:30). In Western society, the term "Christian" refers to a culture that most people identify with. In the Bible, "Christian" describes a way of life that is typical of a very small group. Clearly, 200 million individuals have not given up everything to follow Christ. Let me ask, have you made that sacrifice to follow Him?