רַ֣ק אַתָּ֔ה לֹ֥א תִבְנֶ֖ה הַבָּ֑יִת כִּ֤י אִם־בִּנְךָ֙ הַיֹּצֵ֣א מֵחֲלָצֶ֔יךָ הֽוּא־יִבְנֶ֥ה הַבַּ֖יִת לִשְׁמִֽי׃
nevertheless thou shalt not build the house; but thy son that shall come forth out of thy loins, he shall build the house for My name.
Read kabbalistic (mystical) interpretation of I Kings 8:19: and classical mystical sources.