1 Kings 5:1

And Hiram king of Tyre sent his servants unto Solomon; for he had heard that they had anointed him king in the room of his father: for Hiram was ever a lover of David.

Hiram king of Tyre sent his servants to Solomon after hearing that Solomon had been anointed king in his father David's place, because Hiram had always loved David. That love grew out of David's lasting friendship with the people of Tyre and Sidon, who never molested or harmed Israel, and his sending of servants to Solomon expressed that peaceful goodwill. At this time Hiram himself acknowledged Jehovah as the true God, while some of the Sidonians were turning away from idol worship.

This friendly approach came at the height of Israel's greatness under David and Solomon, when Solomon reigned from the Euphrates to the Philistines and to Egypt and had dominion and peace on every side. Then Judah and Israel dwelt safely under vine and fig tree from Dan to Beersheba, and Solomon was strengthened in his kingdom because the Lord his God was with him and magnified him exceedingly. It was part of fulfilling the promise given to Abraham and repeated through Moses that if Israel kept God's commandments, loved Him, walked in His ways and clung to Him, God would drive out greater and mightier nations, give them every place their feet tread from the wilderness and Lebanon and the Euphrates to the uttermost sea, and allow no one to stand against them.

The verse marks the change of workers in building the temple from David to Solomon, for David made large provisions for the house of the Lord but was told by the Lord that he was not to build it. That work must fall to Solomon his son, with David's role limited to advising, counseling, and encouraging Solomon from his large experience while the younger man did the work. It teaches that older, weary and worn workers who do not grasp the greatness of the work and do not keep pace with its growing demands should not keep all responsibility to themselves and block or restrict younger helpers whom God is qualifying, lest the work be held back.