This paper examined the theology of marriage in Genesis 2 and how it impacts premarital counselling within the Christian ideology, through biblical principles for marital harmony. Using a theological and doctrinal dimension, the paper analysed Genesis 2 narrative and its relevance to modern Christian marriage. It also reviewed existing literature, scriptural interpretations, and current views on premarital counselling. The study revealed that Genesis 2 presented marriage as a divine institution, which was instituted by God for man companionship, procreation, and spiritual fulfilment. It further emphasized that marriage should be between a man and a woman (heterosexual) and should be monogamous, not polygamous. It also suggested that God’s will for humanity is to form unions through marriage to prevent loneliness. In addition, premarital counselling, that is rooted in these biblical principles, empowers couples with communication skills, emotional and spiritual readiness, and conflict resolution strategies, which contribute to the stability and success of Christian marriages. Premarital counselling that is based on Genesis 2 can also address common misconceptions, such as the importance of marriage preparation, thereby providing a framework for understanding marriage as a sacred, lifelong commitment. It was concluded that the implications for premarital counselling derived from Genesis 2 are important for guiding couples toward building a God-centred marriage. The findings recommended that pastors and counsellors should uphold biblical teachings as foundational in their guidance, to ensure a healthier, and more enduring marriages within the Christian household.