What is the biblical basis for "anointing" someone's head with olive oil during their ordination?

The practice of anointing someone's head with olive oil during their ordination is a common tradition in many Christian denominations. This practice has its roots in the Bible, where anointing with oil was a sign of consecration to a particular role or office. But what is the biblical basis for this practice, and what does it signify?

In the Bible, anointing with oil was a common practice that was used to consecrate people and objects for holy purposes. For example, in the book of Exodus, Moses is instructed to anoint the tabernacle, the altar, and all its utensils with oil as a sign of their consecration to God. Similarly, in the book of Samuel, the prophet anoints Saul as the first king of Israel with oil as a sign of his consecration to this role.

The practice of anointing with oil is also closely associated with the idea of the Holy Spirit. In the New Testament, Jesus is described as the "anointed one," or the Messiah, who was anointed with the Holy Spirit at his baptism. This connection between anointing and the Holy Spirit is reflected in the practice of anointing during ordination, where it is seen as a sign of the Holy Spirit's presence and guidance.

The use of olive oil in anointing is also significant. In the Bible, olive oil was seen as a symbol of abundance, healing, and strength. It was also used as a source of light, as in the lamps of the Temple. By anointing with olive oil, the person being ordained is symbolically blessed with these qualities and is given strength and guidance to carry out their role.