Note 22 at 1Co 12:9: All believers have faith. That's how they were saved (Eph 2:8). They actually have the same faith as Jesus (see note 16 at Ro 12:3), but their souls have to be matured through the renewing of the mind to operate in that faith. That's the reason the Scriptures speak of great faith (Mt 8:10) and little faith (Mt 8:26). We can use different amounts of faith.

However, the faith that is mentioned here as a gift of the Holy Spirit is different from the faith received at salvation. This gift of the Spirit is a supernatural imparting of faith that doesn't come through the normal process of renewing the mind (see note 9 at Ro 12:2). It is a gift for the purpose of helping those who are struggling in faith to believe.

Many things that we need come directly "according to our faith" (Mt 9:29). If our faith is weak, we need to strengthen it and/or seek out a person with the gift of faith to help us (see note 17 at 1Co 12:8).

Note 23 at 1Co 12:9: Notice that this says "gifts" (plural) of healing. According to 1Co 12:5-6, there can be different administrations and operations of the same gift (see note 9 at 1Co 12:5 and note 10 at 1Co 12:6), and this provides plenty of variety through just one gift. But this specifically mentions a plurality of gifts of healing.

Note 24 at 1Co 12:9: The gifts of healing are supernatural powers released through an individual for the purpose of bringing healing to others (see note 25 at 1Co 12:10). All believers can lay hands on the sick and see them recover (Mr 16:17-18 and Joh 14:12), but there are some people who are called to a ministry of healing the sick (see note 30 at 1Co 12:11). These people are endued with the gifts of healing, and this characterizes their ministry.