For the king had taken counsel, and his princes, and all the congregation in Jerusalem, to keep the passover in the {b} second month.

(b) Though they should have done it in the first month, as in Ex 12:18, Nu 9:3, yet if any were not clean or else had a long journey, they could delay it to the second month, as in Nu 9:10,11.

Wesley's Notes

30:2 Second month - Which was against the common rule, but the doing of this in its proper time, namely, the fourteenth day of the first month was impossible, because the temple was not cleansed, nor they prepared. As there was a proviso in the law, that particular persons who were unclean in the first month, might keep the passover the fourteenth day of the second month, he doubted not but that might be extended by the whole congregation.

Scofield Reference Notes

Margin second month

i.e. May; 2Chr 30:13,15.

Matthew Henry's Concise Commentary

30:1-12 Hezekiah made Israel as welcome to the passover, as any of his own subjects. Let us yield ourselves unto the Lord. Say not, you will do what you please, but resolve to do what he pleases. We perceive in the carnal mind a stiffness, an obstinacy, an unaptness to compel with God; we have it from our fathers: this must be overcome. Those who, through grace, have turned to God themselves, should do all they can to bring others to him. Numbers will be scorners, but some will be humbled and benefited; perhaps where least expected. The rich mercy of God is the great argument by which to enforce repentance; the vilest who submit and yield themselves to the Lord, seek his grace, and give themselves to his service, shall certainly be saved. Oh that messengers were sent forth to carry these glad tidings to every city and every village, through every land!