extol - praise
‘Extol' is an amplified form of praise. The term is most commonly used in the context of extolling the ‘virtues/merits/benefits’ of something or someone. It can be passionate and sincere in nature, or quite sycophantic.
The candidate was very quick to extol his own virtues, which I found to be a little off-putting.
John has been extolling the merits of the new rota system all week, but he’s the only one who likes it.
While introducing the politician, the speaker extolled her achievements since she took office.