וַיְהִ֗י לְעֵת֙ זִקְנַ֣ת שְׁלֹמֹ֔ה נָשָׁיו֙ הִטּ֣וּ אֶת־לְבָב֔וֹ אַחֲרֵ֖י אֱלֹהִ֣ים אֲחֵרִ֑ים וְלֹא־הָיָ֨ה לְבָב֤וֹ שָׁלֵם֙ עִם־יְהוָ֣ה אֱלֹהָ֔יו כִּלְבַ֖ב דָּוִ֥יד אָבִֽיו׃
For it came to pass, when Solomon was old, that his wives turned away his heart after other gods; and his heart was not whole with the LORD his God, as was the heart of David his father.
Read kabbalistic (mystical) interpretation of I Kings 11:4: and classical mystical sources.