Step-by-step explanation:
The verb "saber" in Spanish can express knowledge, although in the preterite it can mean "to find out". 
 
Let's see examples: 
 
"Yo se como hacer pastel." --- It implies knowledge. 
 
"¡Lo sabía! - This exclamation is used to give a sense of discovery to a thing. 
 
Next I will write how the verb Saber is conjugated in the present and in the preterite for the different people of Spanish. 
 
Present: 
 
Yo se 
 
Tú sabes 
 
Él / Ella / Usted sabe 
 
Nosotros/as sabemos 
 
Ellos/Ellas/Ustedes saben 
 
Preterite: 
 
Yo sabía 
 
Tú sabías