衷心から from (the bottom of) one's heart●with all one's heart (and soul)●with utter sincerity 【副】inly

衷心からの祝詞 heartfelt congratulations

衷心からの欲求 inmost desire

衷心よりお悔やみを言う〔人に〕 extend one's heartfelt [sincere] sympathy to