Why is coming to Christ essential according to Zechariah?

Zechariah 14:17 states that those who do not come to worship the King will receive no rain, symbolizing a lack of God's blessings. In the context of the Old Testament, rain often represents God's favor and provision. Thus, refusing to come to Christ equates to rejecting the grace and mercy that He offers. The passage stresses the necessity of coming to Jerusalem, or to Christ, as the only means of receiving spiritual nourishment. Those who remain outside of this relationship face spiritual famine and judgment, as highlighted in the subsequent verses detailing the plague that befalls those who do not draw near to God.