'Fellowheirs' in the Bible

And if children, then heirs (namely, heirs of God and also fellow heirs with Christ) -- if indeed we suffer with him so we may also be glorified with him.

namely, that through the gospel the Gentiles are fellow heirs, fellow members of the body, and fellow partakers of the promise in Christ Jesus.

By faith he lived as a foreigner in the promised land as though it were a foreign country, living in tents with Isaac and Jacob, who were fellow heirs of the same promise.

Husbands, in the same way, treat your wives with consideration as the weaker partners and show them honor as fellow heirs of the grace of life. In this way nothing will hinder your prayers.