וַיְהִ֕י עִם־לְבַ֖ב דָּוִ֣ד אָבִ֑י לִבְנ֣וֹת בַּ֔יִת לְשֵׁ֥ם יְהוָ֖ה אֱלֹהֵ֥י יִשְׂרָאֵֽל׃
Now it was in the heart of David my father to build a house for the name of the LORD, the God of Israel.
Read kabbalistic (mystical) interpretation of I Kings 8:17: and classical mystical sources.