How do we know the concept of holy things is important for Christians?

Understanding the concept of holiness in the context of scripture is essential for Christians as it underscores the nature of their relationship with God. Holy things are those set apart by God for a divine purpose, which includes the gospel and spiritual nourishment. As believers, it is vital to recognize that not everyone is prepared to receive these truths. Just as the ceremonial laws of the Old Testament mandated that holy substances were not to be mixed with what was common, the same applies spiritually; the gospel is meaningful only to those who are born again. This unique position mandates care in how believers share their faith, favoring discussions with those whom God has opened their hearts to receive.