He was adamant about refusing the honour bestowed upon him. He did not trust the credentials of the organisation that intended to recognise his contribution.

He was adamant about refusing the honour bestowed upon him as because he did not trust the credentials of the organisation that intended to recognise his contribution.

He was adamant about refusing the honour bestowed upon him due to he did not trust the credentials of the organisation that intended to recognise his contribution.

He was adamant about refusing the honour bestowed upon him since he did not trust the credentials of the organisation that intended to recognise his contribution.

He was adamant about refusing the honour bestowed upon him whenever he did not trust the credentials of the organisation that intended to recognise his contribution.